The advice given by specialist in this field of kinesiology is that the pillows should be of a thickness that keeps the head and neck in one line, with the pillow filling the gap between the tip of the shoulder and the neck. In sleeping on the side the pillow can be flattened.
It is worth spending some time in finding out how you can get the best from the time you spend in bed–nearly a third of a lifetime –for relaxation and sleep can, coupled with the right attitude of mind, ensure that you are constantly renewing those parts if the body that suffer most from the wear and tear of everyday life.